trt
:Treatment indicator (1=control group, 2=treatment
group)
karno1
, karno2
, karno3
:Orthogonal
polynomials of first, second, and third degree representing
Karnofsky performance score (0=bad, 100=good)
diagtime1
, diagtime2
:Orthogonal
polynomials of first and second degree representing time from
diagnosis to randomization (months)
age1
, age2
, age3
:Orthogonal
polynomials of first, second, and third degree representing the
patient's age in years
prior
:Prior therapy (0=no, 1=yes)
squamous
, small
, adeno
,
large
:Indicators for the lung cancer cell type. For
each subject, exactly one of these columns will be 1 and the rest
0.